16
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Measure Wheel Size
Diameter
x3.14
Wheel Size =
Wheel Diameter(mm)
x3.14
Knowing your exact wheel size it critical for Striker to calculate
correct speed and distance data. The more accurate the wheel
size, the better Striker performs.
Overview:
Method 1: Ruler
Find the
circumference
of front wheel by
measuring its
diameter in
millimeters. Multiply
the Wheel Diameter by 3.14.
The result is your wheel size.
On a flat surface, mark the tire sidewall and the ground with a
marking pen. Roll the wheel until the mark on the tire completes
one revolution and is back on the ground. Mark the ground at this
location. Measure the distance between the marks on the ground
in millimeters (multiply inches by 25.4 to convert to mm). Use
this number for your wheel size. For accuracy, the rider’s weight
should be on the bike when making the measurement.
Method 2: Rolling
